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Finding the Fourth Proportional to 615,549.17, 921,623.36 and 315,383.42

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Solution

The fourth proportional to 615,549.17, 921,623.36 and 315,383.42 is: 472,203.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,549.17 : 921,623.36 = 315,383.42 : x
  2. Step 2: Convert to fraction form
    615,549.17/921,623.36 = 315,383.42/x
  3. Step 3: Cross multiply
    615,549.17x = 921,623.36 × 315,383.42
  4. Step 4: Simplify right side
    615,549.17x = 290,664,721,043.66
  5. Step 5: Solve for x
    x = 290,664,721,043.66/615,549.17
  6. Step 6: Final answer
    x = 472,203.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.